I applied online, and within a week or so received an initial interview call from HR. Her first question was about my salary requirements - make sure you give a realistic amount, as it sounded like a ton of applicants had been disqualified by saying they wanted six figures (apparently they didn't realize what field they were getting into). She asked basic "tell me a time when" questions, nothing too difficult, and explained more about the position and interviewing process. I understood my next interview would be with the field director, and then I would have a half-day shadow at the hospital to make sure I was a good fit with the team.
Set up an interview with the field director for about a week later. He was flying in, and I had to meet him at a hotel lobby closer to the airport so it was about a 90 min drive each way. Very odd interview - after about 5 minutes of basic questions, he leaned back and said "so what questions do you have for me?" I've always taken that to be the round-up to an interview, and figured I'd failed it on some level if he was already looking for it to end. But however annoying I may have seemed, I kept it going with questions about the company and position for about another 40 minutes. I finally asked what the next steps were/when I'd hear back, and he said he would e-mail me within a week about a shadow at the hospital.
He did get back to me, and we set up a day where I would shadow at one hospital about 90 minutes from the one I'd applied to, to shadow with the manager there for the morning. Then I would drive to the other hospital to finish out the day and meet the staff/Dr's. The first half went AMAZING. The manager was awesome, as were the staff, everything ran very smoothly and I could see myself in the position. At the hospital I'd be working at however, it was chaotic. Everyone was running around, seemed short-tempered, and when I sat down with the Dr for a quick interview she made some very odd comments about how people thought she was "mean and cold" - that should have tipped me off and turned me away.
Came back from that and got in touch with the field director again, saying I was still interested. Figured an offer would be made soon, as I didn't think they had many people in for shadows. Nope, not done yet. I then had a phone interview with the medical director, who asked tougher questions. Still I must have made it past her, because I was then invited for yet another phone interview, this time with the regional VP. He was awesome, didn't ask anything crazy but apparently thought my questions were very well thought-out and more originally than previous applicants.
A day or so after the last phone interview, I got a call back from the field director with an offer. The whole process was very long and thorough - I've never had that so many interviews for any previous position.